Jess 2-28-08 / 2-29-08
Insoluble- not able to be dissolveed in another substance. (sulfur was insoluble)
Copper Sulfate: transparent, light blue, crystals remainded at bottom, uniform throughout test tube, was dissolved, or soluble. Zinc Oxide: Opaque, white, uniform, had not dissolved because if it had, it would become transparent. Sucrose (a gluecose attached to a frucose): transparent, crystals at the bottom, translucent, had dissolved. Sodium Chorlide: uniform (homogenius), nonviscus, transparent, translucent, no crystals left, had dissolved. Sulfur: Cakey, not uniform, stuck to the sides, clumped up, some floated some sank, did not dissolve.
Zac 2-28-08 / 2-29-08
Soluble- able to be dissolved in another substance (The sodium chloride is soluble in water)
Solvent- the substance in which a solute is dissolved to form a solution. (water is a solvent)
Solute- the substance that is dissolvd to form a solution (suecrose is a solute)
Hi! I am uranium. Who are you? I am a big strong atom. In ancient times I was used to color glass and ceramics. I am used as a fuel in nuclear reactors.
Anya 2-28-08 / 2-29-08
Solution- A mixture that appears to be a single substance but is composed of particles of two or more substances that are distrubuted evenly amongs eachother. (suecrose dissolved into the water to form a solution)
Mixtures- They are made of more than one kind of particle. They are not chemicly combined.
HI I am silver! I am used to make jewelry. I am also used to make coat hangers. I am used to make utensils such as forks and spoons. I make photographic film and paper.
3/26/08
Atomic Theory
Democritus
Dalton
Thompson
Believed that matter can eventually
be cut into an uncuttable particle.
Claimed all substances are made
of atoms.
Discovered that atoms can be divided.
Claimed atoms are always moving.
Atoms join with other atoms to make
new substance.
They have particles called electrons.
Said atoms joined together.
Atoms of the same element are
exactly alike.
Proposed a model called Plum Pudding
model to describe a structure of an atom.
Tyler 2-28-08 / 2-29-08
Dissolve- to make a solution of, as by mixing with a liquid; pass into solution: to dissolve salt in water. OR to melst; liquefy. (sodium chloride dissolved)
Hi I am potassium. I am a nutrient in plants and fertilizers. I am also used in scuba tanks to produce oxygen. I am also used in explosives and gun powder. I am also used as a valuable mineral to the human body. WRITING ALAB CONCLUSION3-3-08
-strong opening sentence ( use data to support it):
-talk about variation in data
-talk about data
-state thesis
-talk about hypothesis ( supported or not supported)
-talk about concepts important to know for the understanding of your conclusion:
*terms such as solution, solute, solvent, dissolve
*explian why those terms are essential for the understanding of the lab
OTHER NOTES
Composition
Properties
Separation
Element
one kind of particle
very specific properties
already in simplist form
cannot be broken
Compound
made of 2 or more
elements.
specific but made up of
different atoms
simplified by using chemical changes
Mixture
2 or more compounds.
vary depending on the
concentrate of the mixture
evaporation, distillation, filtration, other physical changes
COPPER SULFLATE LAB
Purpose- How does dissolving copper sulflate affect the temperaure of the solution?
Hypothesis- As more copper sulflate is added, the temperature will be lower because more sulflate is more energy which causes the dissolving to take more energy from the air.
IV- amount of copper sulflate (grams)
O grams
1 gram
2 grams
3 grams
4 grams
5 grams
6 trials
6 trials
6 trials
6 trials
6 trials
6 trials
DV- Temperature (C)
Constants- solvent (water), same temperature sensor, starting temperature, balance, same amount of water (50 mL) styrofoam cup.
Conclusion-
The data shows that suecrose, copper sulflate, and sodium chloride all dissolved in the water to form a solution. Sulfur and Zinc Oxide both did not dissovle into the water, even when shaken. There was not mch variation in the results because most olab groups had the same results. The only exceptions were with some tables that misundersood how to tell whether it made a solution or not. The Copper Sulflate, Suecrose, and Sodium chloride had dissolved because hey are not as dense as the others.
The hypothesis was that sodium chloride, and suecrose would dissolve and that copper sulflate, sulfure and Zinc Oxide
RESULTS: 3-7-08
Amount of CuSO4 (g)
Temperature (c)
Change in temperature (c)
Average temperature (c)
0
20.10
0
20.75
1
20.10
0
20.57
2
19.95
-.15
20.43
3
19.80
-.15
20.27
4
19.65
-.15
20.09
5
19.50
-.15
19.5
The purpose of our lab today is to find where the kinetic energy comes from when you roll down a hill.
Our hypothesis is the more massive the object is, the more kinetic energy the object will contain as it rolls down the hill.
THE FIRST TRIAL:
Height of ramp-.157m
length of ramp-.9 m
mass of cart-40.0 grams
weight of cart-.04 grams
trial1-.84
trial2-.97
trial3-.84
SECOND TRIAL:
Height of ramp- .135 m
length of ramp- .9 m
mass of cart- 40.0 grams
2-6-08
1-24-08 Notes on chapter 9 continued.
Energy resource: natural resource that can be converted by humans into other forms of energy in order to do useful work. Fossil Fuels: are energy resources that are formed from the buried remains of plans and animals that lived millions of years ago.
Renewable energy resource- can be replaced in nature over a relativly short period of time.
Example: Biomass, Wind, Solar energy, Geothermal energy, ect. Non-Renewable energy resource- cannot be replaced after they are used or can be replaced only after millions of years.
Example: Nuclear, Coal, Natural Gos, Petroleum, ect. (carbon based)
1-23-08
Specific notes on chapter 9 -Kinetic energy is the energy of motion.
- Potential energy is the energy of an object because of its position or shape.
VARIOUS FORMS OF ENERGY
Thermal energy - The toatle amount of kinetic energy throughout the particles.
chemical - The energy of a compund that changes as its atoms are rearranged to form a new compund.(a form of potential energy)
electrical - The energy of electric charges.(kinetic)
sound - The energy caused by an object's viberations.(form of kinetic)
light - The energy produced by vibrations of electricly charged particles.(kinetic)
nuclear - The energy from change of nucleous of an atom.(kinetic)
gravitational potential energy -
Energy conversion - a change from one form of energy to another.
The roller coaster has the most potential energy at the top of the hill and the least at the bottom.
The roller coaster has the most kinetic at the bottom of the the hill and least at the top.
The roller coaster looses energy to sound and friction
1-18-08
This is the study guide we made for the benchmark
-Density is the amount of matter in a object.
-Mass is the amount of space something occupies.
-On the phase change graphs you will need to know that when the line is flat it is a change of state, and when it is going up or down it is either rising or decreasing in the temperature.
- The amount of energy needed to change the temperature of 1kg of a substance by 1 C is its specific heat capacity.
- Characteristic Properties Of Matter (Physical) :
- Ductility- being drawn into thin wires
- Maliability- being hammered into thin sheets
- Colo
Jess
2-28-08 / 2-29-08
Insoluble- not able to be dissolveed in another substance.
(sulfur was insoluble)
Copper Sulfate: transparent, light blue, crystals remainded at bottom, uniform throughout test tube, was dissolved, or soluble.
Zinc Oxide: Opaque, white, uniform, had not dissolved because if it had, it would become transparent.
Sucrose (a gluecose attached to a frucose): transparent, crystals at the bottom, translucent, had dissolved.
Sodium Chorlide: uniform (homogenius), nonviscus, transparent, translucent, no crystals left, had dissolved.
Sulfur: Cakey, not uniform, stuck to the sides, clumped up, some floated some sank, did not dissolve.
Zac
2-28-08 / 2-29-08
Soluble- able to be dissolved in another substance
(The sodium chloride is soluble in water)
Solvent- the substance in which a solute is dissolved to form a solution.
(water is a solvent)
Solute- the substance that is dissolvd to form a solution
(suecrose is a solute)
Hi! I am uranium. Who are you? I am a big strong atom. In ancient times I was used to color glass and ceramics. I am used as a fuel in nuclear reactors.
Anya
2-28-08 / 2-29-08
Solution- A mixture that appears to be a single substance but is composed of particles of two or more substances that are distrubuted evenly amongs eachother.
(suecrose dissolved into the water to form a solution)
Mixtures- They are made of more than one kind of particle. They are not chemicly combined.
HI I am silver! I am used to make jewelry. I am also used to make coat hangers. I am used to make utensils such as forks and spoons. I make photographic film and paper.
3/26/08
Atomic Theory
be cut into an uncuttable particle.
of atoms.
new substance.
exactly alike.
model to describe a structure of an atom.
Vison Learning
Tyler
2-28-08 / 2-29-08
Dissolve- to make a solution of, as by mixing with a liquid; pass into solution: to dissolve salt in water. OR to melst; liquefy.
(sodium chloride dissolved)
Hi I am potassium. I am a nutrient in plants and fertilizers. I am also used in scuba tanks to produce oxygen. I am also used in explosives and gun powder. I am also used as a valuable mineral to the human body.
WRITING A LAB CONCLUSION 3-3-08
-strong opening sentence ( use data to support it):
-talk about variation in data
-talk about data
-state thesis
-talk about hypothesis ( supported or not supported)
-talk about concepts important to know for the understanding of your conclusion:
*terms such as solution, solute, solvent, dissolve
*explian why those terms are essential for the understanding of the lab
OTHER NOTES
cannot be broken
elements.
different atoms
concentrate of the mixture
COPPER SULFLATE LAB
Purpose- How does dissolving copper sulflate affect the temperaure of the solution?
Hypothesis- As more copper sulflate is added, the temperature will be lower because more sulflate is more energy which causes the dissolving to take more energy from the air.
IV- amount of copper sulflate (grams)
Constants- solvent (water), same temperature sensor, starting temperature, balance, same amount of water (50 mL) styrofoam cup.
Conclusion-
The data shows that suecrose, copper sulflate, and sodium chloride all dissolved in the water to form a solution. Sulfur and Zinc Oxide both did not dissovle into the water, even when shaken. There was not mch variation in the results because most olab groups had the same results. The only exceptions were with some tables that misundersood how to tell whether it made a solution or not. The Copper Sulflate, Suecrose, and Sodium chloride had dissolved because hey are not as dense as the others.
The hypothesis was that sodium chloride, and suecrose would dissolve and that copper sulflate, sulfure and Zinc Oxide
RESULTS: 3-7-08
The purpose of our lab today is to find where the kinetic energy comes from when you roll down a hill.
Our hypothesis is the more massive the object is, the more kinetic energy the object will contain as it rolls down the hill.
THE FIRST TRIAL:
Height of ramp-.157m
length of ramp-.9 m
mass of cart-40.0 grams
weight of cart-.04 grams
trial1-.84
trial2-.97
trial3-.84
SECOND TRIAL:
Height of ramp- .135 m
length of ramp- .9 m
mass of cart- 40.0 grams
2-6-08
1-24-08
Notes on chapter 9 continued.
Energy resource: natural resource that can be converted by humans into other forms of energy in order to do useful work.
Fossil Fuels: are energy resources that are formed from the buried remains of plans and animals that lived millions of years ago.
Renewable energy resource- can be replaced in nature over a relativly short period of time.
Example: Biomass, Wind, Solar energy, Geothermal energy, ect.
Non-Renewable energy resource- cannot be replaced after they are used or can be replaced only after millions of years.
Example: Nuclear, Coal, Natural Gos, Petroleum, ect. (carbon based)
1-23-08
Specific notes on chapter 9
- Kinetic energy is the energy of motion.
- Potential energy is the energy of an object because of its position or shape.
VARIOUS FORMS OF ENERGY
Energy conversion - a change from one form of energy to another.
The roller coaster has the most potential energy at the top of the hill and the least at the bottom.
The roller coaster has the most kinetic at the bottom of the the hill and least at the top.
The roller coaster looses energy to sound and friction
1-18-08
This is the study guide we made for the benchmark
-Density is the amount of matter in a object.
-Mass is the amount of space something occupies.
-On the phase change graphs you will need to know that when the line is flat it is a change of state, and when it is going up or down it is either rising or decreasing in the temperature.
- The amount of energy needed to change the temperature of 1kg of a substance by 1 C is its specific heat capacity.
- Characteristic Properties Of Matter (Physical) :
- Ductility- being drawn into thin wires
- Maliability- being hammered into thin sheets
- Colo